CN116717741B - Multispectral light source - Google Patents
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- CN116717741B CN116717741B CN202310982745.1A CN202310982745A CN116717741B CN 116717741 B CN116717741 B CN 116717741B CN 202310982745 A CN202310982745 A CN 202310982745A CN 116717741 B CN116717741 B CN 116717741B
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Abstract
The application relates to the technical field of analog spectrum light sources, in particular to a multispectral light source, which comprises: a substrate. The same face of base plate is provided with a plurality of full spectrum lamp pearls, bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl. Full spectrum lamp pearl evenly distributed is in the base plate, and bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl evenly alternate in the interval department of full spectrum lamp pearl. Through a plurality of full spectrum lamp pearls, bicolor ultraviolet lamp pearls, yellow lamp pearls, red lamp pearls and near infrared lamp pearls, the light of each lamp pearl forms complementation, and the sunlight simulation spectrum of simulation continuous spectrum, all lamp pearls of base plate department are evenly distributed's state, make the facula that the light source shines even. The LED lamp beads are used as luminous bodies, so that the irradiation of the multispectral light source is stable and the light beam is collimated. Thus, the sunlight simulation light source simulating continuous spectrum makes the light spot irradiated by the light source uniform, irradiation stable and light beam collimated.
Description
Technical Field
The application relates to the technical field of analog spectrum light sources, in particular to a multispectral light source.
Background
In the fields of camera calibration, testing and research of photovoltaic devices, etc., it is often required that sunlight or a light source close to the sunlight provide illumination so as to provide a radiation environment close to the solar spectrum of the earth surface. But working environments and times have limitations if sunlight is used to provide a radiant environment that requires work during the day and outdoors. The simulated sunlight source can provide a radiation environment close to the solar spectrum of the earth surface, including visible light, ultraviolet light, infrared light and the like, so that uninterrupted light irradiation conditions are realized, experiments and production are not limited by the environment, and users can finish the production requiring solar illumination conditions in a non-productive manner.
The current common sunlight simulation light source generally adopts a xenon lamp or a mercury lamp, and the xenon lamp has the advantages of continuous spectrum, and the energy distribution of a visible light part is close to the solar spectrum, but lacks the spectral components of ultraviolet and near infrared; the light emitted by mercury lamps is characterized by spectral lines, typically 254nm, 313nm, 550nm, and ultraviolet components, but is not spectrally continuous in the visible portion. The two light sources also have short service life, large heat and volume, and contain harmful components such as mercury vapor and xenon.
The LED light source has the characteristics of high luminous efficiency, long service life, low energy consumption, good stability and the like, but the spectrum energy of the LED light source is single, and the continuous spectrum sunlight simulation light source is difficult to simulate.
Therefore, how to simulate a continuous spectrum sunlight simulation light source, and make the light spot irradiated by the light source uniform, irradiation stable and beam collimation is a technical problem to be solved.
Disclosure of Invention
The application provides a multispectral light source, aims at solving the technical problems of how to simulate a continuous spectrum sunlight simulation light source in the prior art, and enabling light spots irradiated by the light source to be uniform, irradiation to be stable and light beams to be collimated.
The application provides a multispectral light source, include:
the LED lamp comprises a substrate, wherein a plurality of full-spectrum lamp beads, bicolor ultraviolet lamp beads, yellow lamp beads, red lamp beads and near infrared lamp beads are arranged on the same surface of the substrate;
the full-spectrum lamp beads are uniformly distributed on the substrate, and the bicolor ultraviolet lamp beads, the yellow lamp beads, the red lamp beads and the near infrared lamp beads are uniformly inserted at intervals of the full-spectrum lamp beads;
all the lamp beads at the base plate are in a uniformly distributed state, and the lamp beads at the base plate are all LED lamp beads;
Wherein, the ratio relation between the total spectrum lamp pearl, double-colored ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and the quantity of near infrared lamp pearl is 16:1:1:1:4:2.
further, the peak wavelength of the light emitted by the bicolor ultraviolet lamp beads is 365nm and 405nm, the peak wavelength of the light emitted by the ultraviolet lamp beads is 430nm-435nm, and the peak wavelength of the light emitted by the yellow lamp beads is 500nm-505nm.
Further, the red light beads comprise a first red light bead, a second red light bead, a third red light bead and a fourth red light bead;
the peak wavelength of the light emitted by the first red light beads is 670nm-675nm, the peak wavelength of the light emitted by the second red light beads is 700nm-705nm, the peak wavelength of the light emitted by the third red light beads is 730nm-740nm, and the peak wavelength of the light emitted by the fourth red light beads is 760nm-780nm.
Further, the near infrared lamp beads comprise a first near infrared lamp bead and a second near infrared lamp bead;
the peak wavelength of the light emitted by the first near-infrared lamp beads is 850-880 nm, and the peak wavelength of the light emitted by the second near-infrared lamp beads is 805-825 nm.
Still further, the multispectral light source that this application provided still includes housing and dodging piece, the internal surface of housing is the specular reflection face, the housing is provided with the light outlet, the base plate install in the housing, dodging piece install in the light outlet, light in the housing is through dodging piece homogenization back is launched.
Still further, the light homogenizing member is frosted glass with one side frosted, and the frosted surface of the light homogenizing member faces the inside of the housing.
Still further, even light piece includes the glass board, the even glass sand that adheres to of one side of glass board, glass sand is full of one side of glass board, the pile up the layer number of glass sand is one deck to three, the granularity of glass sand is 150 mesh to 300 mesh, the glass board is adhered with the one side of glass sand is towards the housing inside.
Still further, the dodging member includes:
a support portion having a cylindrical shape;
the light condensing part is arranged at the entrance of the supporting part, the central axis of the light condensing part coincides with the central axis of the supporting part, and the focus of the light condensing part is positioned at the central axis of the supporting part;
The light homogenizing rod is fixedly arranged in the supporting part, and the central axis of the light homogenizing rod coincides with the central axis of the supporting part; and
a light-diffusing portion attached to the exit port of the support portion, the light-diffusing portion having a central axis that coincides with the central axis of the support portion;
the light condensing part condenses the light rays in the housing and forms light spots in the end face range of the incidence end of the light homogenizing rod;
the light homogenizing rod homogenizes the polymerized light beam, and the light diffusing part diffuses the homogenized light beam to make the light emitted from the emergent opening.
Further, the light condensing part and the light diffusing part are convex lenses;
the injection port of the supporting part is provided with a first thread, and the injection ports of the supporting part are provided with second threads;
the edge of the light gathering part is matched with the first thread, and the edge of the light scattering part is matched with the second thread.
Furthermore, the incident end of the light homogenizing rod is provided with a first fixed ring, and the emergent end of the light homogenizing rod is provided with a second fixed ring;
the inner ring of the first fixing ring is matched with the incidence end of the light homogenizing rod, and the incidence end of the light homogenizing rod is clamped;
The outer diameter of the first fixing ring is matched with the inner diameter of the supporting part;
the inner ring of the second fixing ring is matched with the emergent end of the light homogenizing rod, and the emergent end of the light homogenizing rod is clamped;
the outer diameter of the second fixing ring is matched with the inner diameter of the supporting part;
a truncated cone-shaped shading cylinder is arranged between the first fixed ring and the second fixed ring, and the inner wall of the shading cylinder is a specular reflection surface;
one end of the shading cylinder is matched with the outer ring of the first fixed ring and is connected with the outer ring of the first fixed ring;
the other end of the shading cylinder is matched with the inner ring of the second fixing ring and is connected with the inner ring of the second fixing ring.
The beneficial effects that this application reached are:
a multispectral light source proposed by the present application, comprising: a substrate. The same face of base plate is provided with a plurality of full spectrum lamp pearls, bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl. Full spectrum lamp pearl evenly distributed is in the base plate, and bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl evenly alternate in the interval department of full spectrum lamp pearl. All the lamp beads at the base plate are in a uniformly distributed state, and the lamp beads at the base plate are all LED lamp beads. Wherein, the proportional relation between the quantity of full spectrum lamp pearl, bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl is 16:1:1:1:4:2. the full spectrum lamp beads, the bicolor ultraviolet lamp beads, the yellow lamp beads, the red lamp beads and the near infrared lamp beads emit light simultaneously, so that light rays among the lamp beads are complementary, sunlight simulation spectrum of continuous spectrum is simulated, the full spectrum lamp beads are uniformly distributed on the substrate, and the bicolor ultraviolet lamp beads, the yellow lamp beads, the red lamp beads and the near infrared lamp beads are uniformly inserted at intervals of the full spectrum lamp beads, so that light spots irradiated by a light source are uniform. The LED lamp beads are used as luminous bodies, so that the irradiation of the multispectral light source is stable and the light beam is collimated. Thus, the continuous spectrum sunlight simulation light source is simulated by the LED light source, and the light spots irradiated by the light source are uniform, irradiation is stable and the light beam is collimated.
Drawings
FIG. 1 is a layout of a lamp bead on a substrate according to one embodiment of the invention;
FIG. 2 is a graph showing the comparison of the simulated spectrum of a multispectral light source with the AM1.5 standard solar spectrum defined in the "GB/T12637 solar simulator general Specification" when the light beads are arranged according to FIG. 1 in one embodiment of the present invention;
FIG. 3 is a layout of a lamp bead on a substrate according to one embodiment of the invention;
FIG. 4 is a graph showing the comparison of the simulated spectrum of a multispectral light source with the AM1.5 standard solar spectrum defined in the "GB/T12637 solar simulator general Specification" when the light beads are arranged according to FIG. 3 in one embodiment of the present invention;
FIG. 5 is a cross-sectional view of one embodiment of a multispectral light source of the present invention;
FIG. 6 is a perspective cross-sectional view of a multispectral light source in accordance with one embodiment of the present invention;
fig. 7 is a cross-sectional view of a multispectral light source in accordance with one embodiment of the present invention.
Description of main reference numerals:
10. a multispectral light source; 20. a housing; 21. a light outlet; 30. a light homogenizing part; 31. a support part; 311. an entrance port; 312. an outlet port; 32. a light-gathering section; 33. a light homogenizing rod; 34. an astigmatism section; 35. a first fixing ring; 36. a second fixing ring; 37. a light shielding cylinder; 40. a substrate; 50. and (5) a lamp bead.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Example 1
In some embodiments of the present application, a multispectral light source proposed herein includes: a substrate. The same face of base plate is provided with a plurality of full spectrum lamp pearls, bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl.
Full spectrum lamp pearl evenly distributed is in the base plate, and bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl evenly alternate in the interval department of full spectrum lamp pearl. All the lamp beads at the base plate are in a uniformly distributed state, and the lamp beads at the base plate are all LED lamp beads. Wherein, the proportional relation between the quantity of full spectrum lamp pearl, bicolor ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl is 16:1:1:1:4:2.
The full spectrum lamp beads, the bicolor ultraviolet lamp beads, the yellow lamp beads, the red lamp beads and the near infrared lamp beads emit light simultaneously, so that light rays among the lamp beads are complementary, sunlight simulation spectrum of continuous spectrum is simulated, the full spectrum lamp beads are uniformly distributed on the substrate, and the bicolor ultraviolet lamp beads, the yellow lamp beads, the red lamp beads and the near infrared lamp beads are uniformly inserted at intervals of the full spectrum lamp beads, so that light spots irradiated by a light source are uniform. The LED lamp beads are used as luminous bodies, so that the irradiation of the multispectral light source is stable and the light beam is collimated.
Thus, the continuous spectrum sunlight simulation light source is simulated by the LED light source, and the light spots irradiated by the light source are uniform, irradiation is stable and the light beam is collimated.
In some embodiments of the present application, the full spectrum light bead is used as a main light emission source, and the spectrum of the light emitted by the full spectrum light bead is closest to the spectrum of sunlight, but the light of a partial wave band is also absent. And detecting the spectrum of the light emitted by the full-spectrum lamp bead to determine the missing light wave band. According to the light wave band that determines in the testing result lacks, select the type to the LED lamp pearl, confirm to allocate through double-colored ultraviolet lamp pearl, yellow lamp pearl, red lamp pearl and near infrared lamp pearl and full spectrum lamp pearl, make the spectrum of the light beam of multispectral light source transmission more be close to sunlight spectrum.
The proportional relationship between the numbers of full spectrum lamp beads, double-color ultraviolet lamp beads, yellow lamp beads, red lamp beads and near infrared lamp beads is 16:1:1:1:4:2. the quantity of the lamp beads with various specifications is regulated, so that the uniformity of the light rays of the multispectral light source meets the expected requirement while the illumination of the multispectral light source is ensured, and the spectrum of the light beam emitted by the multispectral light source is more similar to the spectrum of sunlight.
The circuit is arranged at the base plate, and according to the designed circuit, full spectrum lamp beads, bicolor ultraviolet lamp beads, yellow lamp beads, red lamp beads and near infrared lamp beads are attached to the same side of the base plate, and the full spectrum lamp beads are uniformly distributed on the base plate, and bicolor ultraviolet lamp beads, yellow lamp beads, red lamp beads and near infrared lamp beads are uniformly inserted at intervals of the full spectrum lamp beads. Thus, a multispectral light source is formed, the light beam emitted by the multispectral light source is close to the spectrum of sunlight, and the irradiation uniformity of the light is in accordance with the expected requirement.
In some embodiments of the present application, the peak wavelength of light emitted by the bi-color uv beads is 365nm and 405nm, the peak wavelength of light emitted by the uv beads is 430nm-435nm, and the peak wavelength of light emitted by the yellow beads is 500nm-505nm.
Light with 365nm wavelength, 405nm wavelength, 430nm-435nm wavelength and 500nm-505nm wavelength is supplemented by the double-color ultraviolet lamp beads, the ultraviolet lamp beads and the yellow lamp beads, and the spectrum of the light beam emitted by the multispectral light source is more similar to the spectrum of sunlight by combining the full-spectrum lamp beads.
In some embodiments of the present application, the red light beads include a first red light bead, a second red light bead, a third red light bead, and a fourth red light bead. The peak wavelength of the light emitted by the first red light beads is 670nm-675nm, the peak wavelength of the light emitted by the second red light beads is 700nm-705nm, the peak wavelength of the light emitted by the third red light beads is 730nm-740nm, and the peak wavelength of the light emitted by the fourth red light beads is 760nm-780nm. The proportional relationship between the numbers of the first red light bulb, the second red light bulb, the third red light bulb and the fourth red light bulb is 1:1:1:1.
the light with 670nm-675nm wavelength, 700nm-705nm wavelength, 730nm-740nm wavelength and 760nm-780nm wavelength is supplemented by four red light beads (a first red light bead, a second red light bead, a third red light bead and a fourth red light bead), and the spectrum of the light beam emitted by the multispectral light source is more similar to the spectrum of sunlight by combining the full-spectrum light beads.
In some embodiments of the present application, the near-infrared beads include a first near-infrared bead and a second near-infrared bead. The peak wavelength of the light emitted by the first near-infrared lamp beads is 850-880 nm, and the peak wavelength of the light emitted by the second near-infrared lamp beads is 805-825 nm. The proportional relationship between the number of the first near infrared lamp beads and the number of the second near infrared lamp beads is 1:1.
the light with the wavelength of 850nm-880nm and the wavelength of 805nm-825nm is supplemented by two near infrared beads (a first near infrared bead and a second near infrared bead), and the spectrum of the light beam emitted by the multispectral light source is more similar to the spectrum of sunlight by combining the full-spectrum beads.
Referring to fig. 1-2, in some typical application scenarios of the present application, the number of full spectrum beads may be 16, numbered as LED1, LED2, LED3, LED4, LED8, LED9, LED10, LED11, LED15, LED16, LED17, LED18, LED22, LED23, LED24, LED25; the number of the bicolor ultraviolet beads is 1, the number is LED5, and the peak wavelength of emitted light is 365nm and 405nm; the number of the ultraviolet lamp beads is 1, the number of the ultraviolet lamp beads is LED6, and the peak wavelength of emitted light is 430-435nm; the number of the yellow lamp beads is 1, the number of the yellow lamp beads is LED7, and the peak wavelength of emitted light is 500-505 nm; the number of the first red light beads is 1, the number is LED12, and the peak wavelength of emitted light is 670nm-675nm; the number of the second red light beads is 1, the number is LED13, and the peak wavelength of emitted light is 700nm-705nm; the number of the third red light beads is 1, the number is LED14, and the peak wavelength of emitted light is 730-740 nm; the number of the fourth red light beads is 1, the number of the fourth red light beads is LED19, and the peak wavelength of emitted light is 760nm-780nm; the number of the first near infrared lamp beads is 1, the number is LED20, and the peak wavelength of emitted light is 850nm-880nm; the number of the second near infrared beads is 1, the number is LED21, and the peak wavelength of the emitted light is 805nm-825nm.
Referring to fig. 1 to 2, 16 full-spectrum beads are uniformly arranged on one surface of a substrate in a 4×4 matrix, and two-color ultraviolet beads, yellow beads, first red beads, second red beads, third red beads, fourth red beads, first near-infrared beads and second near-infrared beads are uniformly inserted at intervals of the full-spectrum beads. The double-colored ultraviolet lamp pearl, yellow lamp pearl, first red lamp pearl, second red lamp pearl, third red lamp pearl, fourth red lamp pearl, first near infrared lamp pearl and second near infrared lamp pearl all are adjacent with 4 full spectrum lamp pearls respectively, make 9 lamp pearls arrange according to 3 x 3 matrix. Therefore, 25 lamp beads are uniformly distributed on the substrate, so that light rays among the lamp beads are complementary, further a continuous spectrum sunlight simulation spectrum is simulated, and light spots irradiated by the light source are uniform and stable in irradiation.
Referring to fig. 3 to 4, in some embodiments of the present application, the first, second, third, fourth, fifth and sixth beads may be further added on the basis of 25 bead combinations formed by the full spectrum beads, the bicolor ultraviolet beads, the yellow beads, the first red beads, the second red beads, the third red beads, the fourth red beads, the first near infrared beads and the second near infrared beads. Wherein, full spectrum lamp pearl, bicolor ultraviolet lamp pearl, yellow lamp pearl, first red lamp pearl, second red lamp pearl, third red lamp pearl, fourth red lamp pearl, first near infrared lamp pearl, second near infrared lamp pearl, first lamp pearl, second lamp pearl, third lamp pearl, fourth lamp pearl, fifth lamp pearl and the ratio relation between the quantity of sixth lamp pearl is 16:1:1:1:1:1:1:1:1:1:1:1:1:1:1:1.
In some embodiments of the present application, the number of first beads is 1, numbered LED26, and the peak wavelength of the emitted light is 310nm-370nm; the number of the second lamp beads is 1, the number is LED27, and the peak wavelength of emitted light is 380-400nm; the number of the third lamp beads is 1, the number is LED28, and the peak wavelength of emitted light is 410nm-430nm; the number of the fourth lamp beads is 1, the number is LED29, and the peak wavelength of emitted light is 540nm-590nm; the number of the fifth lamp beads is 1, the number is LED30, and the peak wavelength of emitted light is 630nm-670nm; the number of the sixth lamp beads is 1, the number is LED31, and the peak wavelength of the emitted light is 700nm-720nm. Therefore, the 6 kinds of light beads respectively emit 6 kinds of light rays with the wavelengths to complement the light beams, so that 31 combinations of the light beads are formed, and the light spectrum emitted by the multispectral light source is more similar to the sunlight spectrum. The first lamp bead, the second lamp bead, the third lamp bead, the fourth lamp bead, the fifth lamp bead and the sixth lamp bead are uniformly inserted among 25 lamp beads formed by the full-spectrum lamp beads, the bicolor ultraviolet lamp beads, the yellow lamp beads, the first red lamp beads, the second red lamp beads, the third red lamp beads, the fourth red lamp beads, the first near infrared lamp beads and the second near infrared lamp beads, so that emitted light rays are more uniform.
Referring to fig. 5, in some embodiments of the present application, the multispectral light source 10 further includes a housing 20 and a light homogenizing member 30, wherein an inner surface of the housing 20 is a specular reflection surface, the housing 20 is provided with a light outlet 21, a substrate 40 is installed in the housing 20, the light homogenizing member 30 is installed in the light outlet 21, and light in the housing 20 is homogenized by the light homogenizing member 30 and then emitted.
The inner surface of the housing 20 may be formed with a specular reflection surface by coating or film adhesion, the substrate 40 is mounted in the housing 20, and the surface of the substrate 40 on which the lamp beads 50 are mounted faces the light outlet 21 of the housing 20. Light emitted by the lamp beads 50 in the substrate 40 propagates to the light outlet 21, and is homogenized by the light homogenizing member 30 and then emitted, so that the light emitted by each lamp bead 50 in the multispectral light source 10 is uniformly mixed and then is irradiated outwards, and further a light spot with uniform irradiation is formed. The light irradiated on the inner wall of the housing 20 is reflected by the inner wall of the housing 20 and then is emitted outwards from the light homogenizing member 30, so that the light loss is reduced and the light efficiency of the multispectral light source 10 is improved.
Example two
Referring to fig. 5, in some embodiments of the present application, the light homogenizing member 30 is a frosted glass with a single surface frosted, and the frosted surface of the light homogenizing member 30 faces the interior of the housing 20. The roughness of the frosted surface of the light homogenizing element 30 is 1.6-12.5 mu m, the thickness of the light homogenizing element 30 is 1-3 mm, and the light transmittance of the light homogenizing element 30 is 80-95%.
The substrate 40 is installed in the housing 20, and the light emitted by each lamp bead 50 in the substrate 40 forms a beam and propagates toward the light outlet 21 of the housing 20, and the beam is homogenized by the homogenizing element 30 and then irradiates the outside of the multispectral light source 10. The light homogenizing member 30 is frosted glass with one surface frosted, the frosted surface of the light homogenizing member 30 faces the inside of the housing 20, and the light beam from the substrate 40 is irradiated on the frosted surface of the light homogenizing member 30. Because the frosted surface of the light homogenizing element 30 has a certain roughness, when the light beam irradiates the frosted surface of the light homogenizing element 30, light rays in the light beam are emitted into the light homogenizing element 30 from the fluctuation positions of different angles of the frosted surface, so that the light rays in the light beam enter the light homogenizing element 30 at a plurality of incidence angles, the light rays are distributed more uniformly after passing through the light homogenizing element 30, and light spots irradiated by a light source are uniform and irradiation is stable.
If the light surface of the single-sided frosted glass is directed into the housing 20, the light transmitted through the light homogenizing element 30 is emitted out of the light homogenizing element 30 at a plurality of emission angles due to the frosted surface, and the effect of making the light spots uniform can be achieved, but when the light enters the light homogenizing element 30 from the light surface, part of the light is reflected by the light surface, thereby causing light loss and reducing the light efficiency. If the frosted glass with double-sided frosting is adopted, the light transmittance of the light homogenizing part 30 can be reduced, the light transmittance of the light homogenizing part 30 is less than 80%, and the light efficiency can be reduced, so that the frosted glass with single-sided frosting is adopted, the frosted surface faces the inside of the housing 20, and the light spots can be uniform and the light efficiency can be ensured.
If the roughness of the frosted surface of the light homogenizing element 30 is too small, the frosted surface is too smooth, and the effect of homogenizing the light spots is difficult to achieve; if the roughness of the frosted surface of the light homogenizing element 30 is too large, the light transmittance of the light homogenizing element 30 is reduced, so that the light transmittance of the light homogenizing element 30 is less than 80%, and the light efficiency is reduced; the roughness of the frosted surface of the light homogenizing element 30 is limited to 1.6-12.5 μm, so that the uniformity of light spots can be within an expected range, the light efficiency can be ensured, enough light can pass through the light homogenizing element 30, and the irradiation effect meets the expected requirement.
The thickness of the light homogenizing element 30 is limited to be 1mm-3mm, so that the structural strength of the light homogenizing element 30 can be ensured, the light loss can be reduced, and the light efficiency can be ensured to be within an expected range. The light transmittance of the light homogenizing element 30 is limited to 80% -95%, so that the purchase cost of the light homogenizing element 30 can be effectively reduced, the light loss generated when light passes through the light homogenizing element 30 is reduced, and the light efficiency is ensured to be within an expected range.
In some embodiments of the present application, glass sheets having a thickness of 1mm to 3mm may be first selected and processed to a desired shape during the formation of single-sided frosted glass. One side of the glass sheet is coated with paraffin or resin to provide protection to the one side of the glass sheet. And soaking the glass plate into an etching solution, wherein the etching solution comprises 15 parts by weight of ammonium fluoride, 8 parts by weight of oxalic acid, 10 parts by weight of ammonium sulfate, 40 parts by weight of glycerol and 10 parts by weight of hot water, and the temperature of the etching solution is kept at 40-60 ℃ for 2-3 min. And after the soaking is finished, the glass plate is taken out of the etching solution, and is washed by clean water. One side of the glass plate is corroded through etching liquid, and the other side of the glass plate is protected through paraffin or resin, so that frosted glass with one side frosted is obtained, the roughness of the frosted surface is 1.6-12.5 mu m, and the light transmittance of the frosted glass reaches 80% -95%. When the light emitted by each lamp bead 50 on the substrate 40 forms a light beam and propagates towards the direction of the light outlet 21 of the housing 20, the light beam is homogenized by the light homogenizing member 30 and irradiates outwards the multispectral light source 10, and when the light beam irradiates on the frosted surface of the light homogenizing member 30, the light in the light beam is emitted into the light homogenizing member 30 from the fluctuation positions of different angles of the frosted surface, so that the light in the light beam enters the light homogenizing member 30 at a plurality of incident angles, the light is more uniformly distributed in the light beam after passing through the light homogenizing member 30, and light spots irradiated by the light source are uniform and irradiation is stable. The roughness of the frosted surface of the light homogenizing element 30 is limited to 1.6-12.5 μm, so that the uniformity of light spots can be within an expected range, the light efficiency can be ensured, enough light can pass through the light homogenizing element 30, and the irradiation effect meets the expected requirement. The light transmittance of the light homogenizing element 30 is limited to 80% -95%, so that the purchase cost of the light homogenizing element 30 can be effectively reduced, the light loss generated when light passes through the light homogenizing element 30 is reduced, and the light efficiency is ensured to be within an expected range.
In some embodiments of the present application, a surface of the glass sheet may also be roughened by sand blasting to increase the roughness of the frosted surface of the glass sheet. Wherein, the glass sand with the granularity of 80 meshes to 100 meshes is used for spraying one surface of the glass plate, the sand blasting air pressure is 0.06MPa to 0.12MPa, and the sand blasting time is limited to 30s to 60s. Thus, the roughness of the frosted surface of the light homogenizing element 30 is 1.6-12.5 μm, and the light transmittance of the frosted glass is 80-95%. When the light emitted by each lamp bead 50 on the substrate 40 forms a light beam and propagates towards the direction of the light outlet 21 of the housing 20, the light beam is homogenized by the light homogenizing member 30 and irradiates outwards the multispectral light source 10, and when the light beam irradiates on the frosted surface of the light homogenizing member 30, the light in the light beam is emitted into the light homogenizing member 30 from the fluctuation positions of different angles of the frosted surface, so that the light in the light beam enters the light homogenizing member 30 at a plurality of incident angles, the light is more uniformly distributed in the light beam after passing through the light homogenizing member 30, and light spots irradiated by the light source are uniform and irradiation is stable. The roughness of the frosted surface of the light homogenizing element 30 is limited to 1.6-12.5 μm, so that the uniformity of light spots can be within an expected range, the light efficiency can be ensured, enough light can pass through the light homogenizing element 30, and the irradiation effect meets the expected requirement. The light transmittance of the light homogenizing element 30 is limited to 80% -95%, so that the purchase cost of the light homogenizing element 30 can be effectively reduced, the light loss generated when light passes through the light homogenizing element 30 is reduced, and the light efficiency is ensured to be within an expected range.
Example III
Referring to fig. 5, in some embodiments of the present application, the light homogenizing member 30 includes a glass plate, wherein glass sand is uniformly adhered to one surface of the glass plate, the glass sand occupies one surface of the glass plate, the number of layers of glass sand is one to three, the granularity of the glass sand is 150 mesh to 300 mesh, and the surface of the glass plate, to which the glass sand is adhered, faces the inside of the housing 20.
A frosting liquid containing glass sand with a granularity of 150-300 meshes is coated on one surface of a glass plate by a screen printing mode to form the light homogenizing piece 30 of single-surface frosted glass. The number of layers of glass sand is controlled by screen printing. If the number of layers of glass sand is too high, the transmittance of the light homogenizing member 30 may be lowered. The number of layers of the glass sand is limited to one layer to three layers, the granularity of the glass sand is limited to 150 meshes to 300 meshes, the roughness of the frosted surface of the light homogenizing piece 30 can be 1.6 mu m to 12.5 mu m, and the light transmittance of the frosted glass can reach 80% -95%. When the light emitted by each lamp bead 50 on the substrate 40 forms a light beam and propagates towards the direction of the light outlet 21 of the housing 20, the light beam is homogenized by the light homogenizing member 30 and irradiates outwards the multispectral light source 10, and when the light beam irradiates on the frosted surface of the light homogenizing member 30, the light in the light beam is emitted into the light homogenizing member 30 from the fluctuation positions of different angles of the frosted surface, so that the light in the light beam enters the light homogenizing member 30 at a plurality of incident angles, the light is more uniformly distributed in the light beam after passing through the light homogenizing member 30, and light spots irradiated by the light source are uniform and irradiation is stable. The roughness of the frosted surface of the light homogenizing element 30 is limited to 1.6-12.5 μm, so that the uniformity of light spots can be within an expected range, the light efficiency can be ensured, enough light can pass through the light homogenizing element 30, and the irradiation effect meets the expected requirement. The light transmittance of the light homogenizing element 30 is limited to 80% -95%, so that the purchase cost of the light homogenizing element 30 can be effectively reduced, the light loss generated when light passes through the light homogenizing element 30 is reduced, and the light efficiency is ensured to be within an expected range.
Example IV
Referring to fig. 6 to 7, in some embodiments of the present application, the light homogenizing element 30 includes: a support 31, a light collecting part 32, a light homogenizing rod 33 and a light diffusing part 34. The support portion 31 is cylindrical, and the inner surface of the support portion 31 is a specular reflection surface. The light condensing unit 32 is attached to the entrance 311 of the support unit 31, the central axis of the light condensing unit 32 coincides with the central axis of the support unit 31, and the focal point of the light condensing unit 32 is located at the central axis of the support unit 31. The light homogenizing rod 33 is fixedly installed in the supporting portion 31, and a central axis of the light homogenizing rod 33 coincides with a central axis of the supporting portion 31. The light-diffusing portion 34 is attached to the exit port 312 of the support portion 31, and the central axis of the light-diffusing portion 34 coincides with the central axis of the support portion 31. The light condensing unit 32 condenses the light in the housing 20 and forms a light spot in the end face of the incident end of the light homogenizing rod 33. The homogenizing rod 33 homogenizes the polymerized light beam, and the light-diffusing portion 34 diffuses the homogenized light beam to emit light from the exit port 312.
The light homogenizing member 30 is mounted at the light outlet 21 of the housing 20, the substrate 40 is mounted in the housing 20, and the light emitted by the lamp beads 50 on the substrate 40 is homogenized by the light homogenizing member 30 and then emitted out of the multispectral light source 10. In the light equalizing member 30, the support portion 31 is mounted on the light outlet 21 of the housing 20, the light converging portion 32 is mounted on the light inlet 311 of the support portion 31, the light equalizing rod 33 is mounted in the support portion 31, and the light diffusing portion 34 is mounted on the light outlet 312 of the support portion 31, by abutting the light inlet 311 of the support portion 31 with the light outlet 21 of the housing 20.
The lamp beads 50 on the substrate 40 are uniformly arranged, and the peak wavelengths of the light rays emitted by the lamp beads 50 of different types are different, so that the peak wavelengths of the light rays emitted by the lamp beads 50 of different types are complementary, and the spectrum of the light rays emitted by the multispectral light source 10 is more similar to the spectrum of sunlight. Although the beads 50 are uniformly distributed when the various beads 50 are attached to the substrate 40 so that the light emitted from the substrate 40 is more uniform, the light emitted from different beads 50 may form a plurality of light collecting areas, each collecting area has an overlapping area and also has a respective irradiation area, and thus it is difficult to form uniform mixed light.
All the light rays emitted by the lamp beads 50 on the substrate 40 face the light outlet 21 of the housing 20, and due to the emergence angle of the lamp beads 50, part of the light rays can irradiate the inner wall of the housing 20, the inner wall of the housing 20 is a specular reflection surface, so that the light rays irradiated to the inner wall of the housing 20 can be reflected, more light rays can be further transmitted to the light outlet 21 of the housing 20, and the light efficiency is improved.
All the light rays irradiated to the light outlet 21 of the housing 20 penetrate through the light condensing part 32, the light rays emitted by different lamp beads 50 are polymerized by the light condensing part 32 to form light spots with increased optical density, and the light spots irradiate the end face of the incident end of the light homogenizing rod 33, and enter the light homogenizing rod 33 through the end face of the incident end of the light homogenizing rod 33. The light rays in the polymerized light beam are reflected for a plurality of times in the process of propagating in the light homogenizing rod 33, and then are emitted from the emitting end of the light homogenizing rod 33. Since the refraction angles of the light rays with different wavelengths are different in the same medium, when the light rays polymerized by the light-gathering part 32 enter the light-homogenizing rod 33 at different refraction angles, and the reflection angles of the light rays in the light-homogenizing rod 33 are different due to different refraction angles of the light rays, when the light rays polymerized by the light-gathering part 32 pass through the light-homogenizing rod 33 and are emitted from the emitting end of the light-homogenizing rod 33, the light rays with various wavelengths are fully mixed in the light-homogenizing rod 33 to form a light beam with uniform light distribution. The light beam uniformly mixed by the light-homogenizing rod 33 is emitted from the emitting end of the light-homogenizing rod 33, and then irradiates the light-diffusing part 34, and the irradiation range of the light beam is enlarged by the light-diffusing part 34, so that the irradiation range of the multispectral light source 10 meets the expected requirement. Thus, the light emitted by all the lamp beads 50 on the substrate 40 is homogenized by the light homogenizing member 30 and then emitted outwards to form an expected irradiation range, so that the function of simulating a continuous spectrum sunlight simulation light source is realized, and the light spots irradiated by the light source are uniform, irradiation is stable and light beams are collimated.
Specifically, referring to fig. 6 to 7, in some embodiments of the present application, the inner surface of the housing 20 is dome-shaped, the substrate 40 is mounted on the top of the housing 20, the surface of the substrate 40 provided with the lamp beads 50 faces the light outlet 21 of the housing 20, and the light homogenizing member 30 is mounted on the light outlet 21 of the housing 20. The light emitted by all the lamp beads 50 on the substrate 40 irradiates towards the direction of the light homogenizing member 30, and the light irradiated to the inner surface of the housing 20 is reflected by the inner surface of the housing 20 and then is polymerized towards the direction of the light homogenizing member 30, so that the light efficiency of the multispectral light source 10 is improved. The light beam entering the light homogenizing element 30 enters the light homogenizing element 30 for homogenizing and then irradiates outwards, so that the function of simulating a continuous spectrum sunlight simulation light source is realized, and the light spot irradiated by the light source is uniform, irradiation is stable and the light beam is collimated.
Referring to fig. 6 to 7, in some embodiments of the present application, the light condensing portion 32 and the light diffusing portion 34 are both convex lenses. The entrance 311 of the support 31 is provided with a first thread and the exit 312 of the support 31 is provided with a second thread. The edge of the light gathering portion 32 is fitted with a first thread and the edge of the light dispersing portion 34 is fitted with a second thread.
The substrate 40 is mounted on the top in the housing 20, the surface of the substrate 40 provided with the lamp beads 50 faces the light outlet 21 of the housing 20, the supporting part 31 is mounted on the light outlet 21 of the housing 20, the light converging part 32 is mounted on the light inlet 311 of the supporting part 31, the light homogenizing rod 33 is mounted in the supporting part 31, and the light diffusing part 34 is mounted on the light outlet 312 of the supporting part 31.
In some embodiments of the present application, the relationship between the distance L1 between the lamp bead 50 and the light condensing portion 32 on the substrate 40 and the focal length D of the light condensing portion 32 is configured as: 2D is less than L1 and less than 3D. The relationship between the distance L2 between the incident end face of the light homogenizing rod 33 and the light condensing section 32 and the focal length D of the light condensing section 32 is configured as: d is more than L1 and less than 2D. In this way, the light emitted from all the lamp beads 50 on the substrate 40 is polymerized by the condensing unit 32 to form a light spot with a reduced irradiation range, and the light spot is irradiated in the end face range of the incident end of the light homogenizing rod 33.
The edge of the light condensing portion 32 is fitted to a first screw provided at the entrance 311 of the support portion 31, and when the light condensing portion 32 is attached to the entrance 311 of the support portion 31, the light condensing portion 32 is fixed to the entrance 311 of the support portion 31 by the engagement of the edge of the light condensing portion 32 with the first screw. When the axial position of the light condensing portion 32 is to be adjusted, the light condensing portion 32 is rotated so that the light condensing portion 32 moves in the axial direction along the first screw. When the axial position of the light-collecting part 32 is changed, the distance between the light-collecting part 32 and the substrate 40 and the light-homogenizing rod 33 is also changed, so that the relationship between the focal length D of the light-collecting part 32 and the distance L1 between the lamp bead 50 on the substrate 40 and the light-collecting part 32 and the distance L2 between the incident end face of the light-homogenizing rod 33 and the light-collecting part 32 is changed, the size of the formed light spot on the incident end face of the light-homogenizing rod 33 is changed, the incident angle of each light ray from the incident end face of the light-homogenizing rod 33 is also changed, the size of the formed light spot on the incident end face of the light-homogenizing rod 33 is further adjusted, and the uniformity of the light rays in the light beam emitted from the multispectral light source 10 is adjusted. It can be understood that when the light spot formed on the incident end face of the light homogenizing rod 33 is too large, the size of the light spot exceeds the size of the incident end face of the light homogenizing rod 33, thereby causing light loss and reducing light efficiency; when the spot formed on the incident end face of the light-homogenizing rod 33 is too small, the light beam converged by the condenser 32 is too concentrated, and the light-homogenizing effect of the light beam passing through the light-homogenizing rod 33 is reduced. The relation between the polymerized light spot area S1 and the light emitting area S2 of the substrate 40 is configured to be 1/5 < S1/S2 < 1/3, so that the uniformity of the emergent light of the multispectral light source 10 can meet the expectations.
In some embodiments of the present application, the cross-sectional shape of the light homogenizing rod 33 may be a circle or a polygon, and the relationship between the inscribed circle diameter a of the cross-section of the light homogenizing rod 33 and the length B of the light homogenizing rod 33 may be configured to be 1/3.ltoreq.a/b.ltoreq.1/2, it may be understood that, as the length of the light homogenizing rod 33 increases, the uniformity of light appears to vibrate and rise, and after reaching a certain extent, the length continues to increase, it is difficult to achieve significant improvement on the uniformity of light, but the spot brightness is reduced, so that the length of the light homogenizing rod 33 is limited, so that the light homogenizing effect of the light homogenizing rod 33 is expected, and the spot brightness is within the expected range. The relationship between the inscribed circle diameter A of the cross section of the integrator rod 33 and the light emitting area S2 of the substrate 40 is configured to be 1/3 < A/S2, so that the size of the light spot irradiated on the incident end face of the integrator rod 33 is smaller than the size of the incident end face of the integrator rod 33.
In some embodiments of the present application, the light beam homogenized by the light homogenizing rod 33 irradiates the light diffusing part 34, and expands the size of the light spot by the light diffusing part 34, so that the irradiation range of the multispectral light source 10 meets the expected requirement. Wherein, the relation between the distance l between the exit end face of the light homogenizing rod 33 and the light scattering portion 34 and the focal length d of the light scattering portion 34 is configured such that d < l < 2d so that the enlarged light spot projected from the light scattering portion 34. When the axial position of the light-diffusing part 34 is to be adjusted, the light-diffusing part 34 is turned so that the light-diffusing part 34 moves in the axial direction along the second screw. When the axial position of the light-diffusing portion 34 is changed, the distance between the light-diffusing portion 34 and the light-homogenizing rod 33 is also changed, so that the relationship between the focal length d of the light-diffusing portion 34 and the distance l between the exit end face of the light-homogenizing rod 33 and the light-diffusing portion 34 is changed, and the size of the light spot projected from the light-diffusing portion 34 is changed. Of course, the axial position of the light-diffusing portion 34 may be adjusted so that the reduced light spot projected from the light-diffusing portion 34, that is, the light-diffusing portion 34 condenses light, so that the size of the light spot irradiated outwards by the multispectral light source 10 meets the expected requirement.
Referring to fig. 6 to 7, in some embodiments of the present application, the incident end of the light homogenizing rod 33 is provided with a first fixing ring 35, and the exit end of the light homogenizing rod 33 is provided with a second fixing ring 36. The inner ring of the first fixing ring 35 is matched with the incident end of the light homogenizing rod 33, and is used for clamping the incident end of the light homogenizing rod 33. The outer diameter of the first fixing ring 35 is adapted to the inner diameter of the supporting portion 31. The inner ring of the second fixing ring 36 is matched with the emitting end of the light homogenizing rod 33, and is used for clamping the emitting end of the light homogenizing rod 33. The outer diameter of the second fixing ring 36 is adapted to the inner diameter of the supporting portion 31. A truncated cone-shaped shading cylinder 37 is arranged between the first fixing ring 35 and the second fixing ring 36, and the inner wall of the shading cylinder 37 is a specular reflection surface. One end of the light shielding cylinder 37 is adapted to the outer ring of the first fixing ring 35 and is connected to the outer ring of the first fixing ring 35. The other end of the shading cylinder 37 is matched with the inner ring of the second fixing ring 36 and is connected with the inner ring of the second fixing ring 36.
The incident end of the light homogenizing rod 33 is fixed by the first fixing ring 35, and the exit end of the light homogenizing rod 33 is fixed by the second fixing ring 36, so that the light homogenizing rod 33 is fixedly mounted inside the supporting portion 31 by the first fixing ring 35 and the second fixing ring 36, and the central axis of the light homogenizing rod 33 is overlapped with the central axis of the supporting portion 31.
The first fixing ring 35 and the second fixing ring 36 can be connected to the inner wall of the supporting portion 31 by means of a clamping connection. Specifically, a clamping groove may be disposed at a corresponding position of the inner wall of the supporting portion 31, and clamping protrusions may be disposed on outer rings of the first fixing ring 35 and the second fixing ring 36, where the clamping groove is adapted to the clamping protrusions. When the first fixing ring 35 and the second fixing ring 36 are installed in the supporting portion 31, the first fixing ring 35 and the second fixing ring 36 can be pushed into corresponding positions of the supporting portion 31, the clamping protrusions of the first fixing ring 35 are clamped into the clamping grooves of the corresponding positions, and the clamping protrusions of the second fixing ring 36 are clamped into the clamping grooves of the corresponding positions, so that the first fixing ring 35 and the second fixing ring 36 are installed in the supporting portion 31 and are in detachable fixed connection.
The first fixing ring 35 and the second fixing ring 36 may be fixedly connected to the light homogenizing rod 33 by means of a clamping connection. Specifically, a first protrusion may be disposed at the incident end of the light homogenizing rod 33, a second protrusion may be disposed at the exit end of the light homogenizing rod 33, a first clamping groove may be disposed at the inner ring of the first fixing ring 35, and a second clamping groove may be disposed at the inner ring of the second fixing ring 36. When the light homogenizing rod 33 is installed, the incident end of the light homogenizing rod 33 extends into the inner ring of the first fixing ring 35, the emergent end of the light homogenizing rod 33 extends into the inner ring of the second fixing ring 36, and the first bulge and the second bulge are simultaneously clamped into the first clamping groove and the second clamping groove respectively when the light homogenizing rod 33 is rotated, so that the light homogenizing rod 33 is fixed.
When the light beam condensed by the light condensing unit 32 irradiates the incident end of the light homogenizing rod 33, the light enters the light homogenizing rod 33, is homogenized by the light homogenizing rod 33, and is emitted from the emitting end of the light homogenizing rod 33 and irradiates the light diffusing unit 34. When the polymerized light beam propagates in the light homogenizing rod 33, if a part of light is emitted from the side wall of the light homogenizing rod 33, the light can be reflected by the inner wall of the light shielding cylinder 37 to make a part of light return to the light homogenizing rod 33, so that the light loss is reduced and the light efficiency is improved.
The light emitted by all the lamp beads 50 on the substrate 40 is polymerized by the light condensing part 32 to form a light spot with a reduced irradiation range, so that the light spot irradiates the end face range of the incident end of the light homogenizing rod 33. When the light rays polymerized by the light condensing unit 32 pass through the light homogenizing rod 33 and are emitted from the emitting end of the light homogenizing rod 33, the light rays with various wavelengths are fully mixed in the light homogenizing rod 33 to form a light beam with uniform light distribution. The light beam uniformly mixed by the light-homogenizing rod 33 is emitted from the emitting end of the light-homogenizing rod 33, and then irradiates the light-diffusing part 34, and the irradiation range of the light beam is enlarged by the light-diffusing part 34, so that the irradiation range of the multispectral light source 10 meets the expected requirement. Thus, the light emitted by all the lamp beads 50 on the substrate 40 is homogenized by the light homogenizing member 30 and then emitted outwards to form an expected irradiation range, so that the function of simulating a continuous spectrum sunlight simulation light source is realized, and the light spots irradiated by the light source are uniform, irradiation is stable and light beams are collimated.
In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the foregoing description of the preferred embodiment of the invention is provided for the purpose of illustration only, and is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. A multi-spectral light source, comprising:
the housing is provided with a light outlet;
the base plate is arranged in the housing, and a plurality of full-spectrum lamp beads, double-color ultraviolet lamp beads, yellow lamp beads, red lamp beads and near infrared lamp beads are arranged on the same surface of the base plate;
The light homogenizing piece is arranged at the light outlet, and light rays in the housing are homogenized by the light homogenizing piece and then emitted;
wherein, the full spectrum lamp beads are uniformly distributed on the substrate, and the bicolor ultraviolet lamp beads, the yellow lamp beads, the red lamp beads and the near infrared lamp beads are uniformly inserted at the intervals of the full spectrum lamp beads;
all the lamp beads at the base plate are in a uniformly distributed state, and the lamp beads at the base plate are all LED lamp beads;
the ratio relationship between the numbers of full spectrum lamp beads, double-color ultraviolet lamp beads, yellow lamp beads, red lamp beads and near infrared lamp beads is 16:1:1:1:4:2;
the dodging piece includes:
a support portion having a cylindrical shape;
the light condensing part is arranged at the entrance of the supporting part, the central axis of the light condensing part coincides with the central axis of the supporting part, and the focus of the light condensing part is positioned at the central axis of the supporting part;
the light homogenizing rod is fixedly arranged in the supporting part, and the central axis of the light homogenizing rod coincides with the central axis of the supporting part; and
A light-diffusing portion attached to the exit port of the support portion, the light-diffusing portion having a central axis that coincides with the central axis of the support portion;
the light condensing part condenses the light rays in the housing and forms light spots in the end face range of the incidence end of the light homogenizing rod;
the light homogenizing rod homogenizes the polymerized light beam, and the light diffusing part diffuses the homogenized light beam to enable the light to be emitted from the emergent port;
the light condensing part and the light diffusing part are convex lenses;
the injection port of the supporting part is provided with a first thread, and the injection ports of the supporting part are provided with second threads;
the edge of the light gathering part is matched with the first thread, and the edge of the light scattering part is matched with the second thread.
2. The multi-spectral light source of claim 1, wherein the peak wavelength of light emitted by the bi-color ultraviolet beads is 365nm and 405nm, the peak wavelength of light emitted by the ultraviolet beads is 430nm-435nm, and the peak wavelength of light emitted by the yellow beads is 500nm-505nm.
3. The multi-spectral light source of claim 1, wherein the red light beads comprise a first red light bead, a second red light bead, a third red light bead, and a fourth red light bead;
The peak wavelength of the light emitted by the first red light beads is 670nm-675nm, the peak wavelength of the light emitted by the second red light beads is 700nm-705nm, the peak wavelength of the light emitted by the third red light beads is 730nm-740nm, and the peak wavelength of the light emitted by the fourth red light beads is 760nm-780nm.
4. The multi-spectral light source of claim 1, wherein the near infrared beads comprise a first near infrared bead and a second near infrared bead;
the peak wavelength of the light emitted by the first near-infrared lamp beads is 850-880 nm, and the peak wavelength of the light emitted by the second near-infrared lamp beads is 805-825 nm.
5. The multi-spectral light source of claim 1 wherein the inner surface of the housing is a specular reflective surface.
6. The multi-spectral light source of claim 1 wherein the light homogenizing member is a single-sided frosted glass with the frosted surface of the light homogenizing member facing the interior of the housing.
7. The multi-spectral light source according to claim 1, wherein the light homogenizing member comprises a glass plate, glass sand is uniformly adhered to one surface of the glass plate, the glass sand occupies one surface of the glass plate, the number of layers of the glass sand is one to three, the granularity of the glass sand is 150 meshes to 300 meshes, and the surface of the glass plate, to which the glass sand is adhered, faces the inside of the housing.
8. The multi-spectral light source according to claim 1, wherein the incident end of the light homogenizing rod is provided with a first fixing ring, and the exit end of the light homogenizing rod is provided with a second fixing ring;
the inner ring of the first fixing ring is matched with the incidence end of the light homogenizing rod, and the incidence end of the light homogenizing rod is clamped;
the outer diameter of the first fixing ring is matched with the inner diameter of the supporting part;
the inner ring of the second fixing ring is matched with the emergent end of the light homogenizing rod, and the emergent end of the light homogenizing rod is clamped;
the outer diameter of the second fixing ring is matched with the inner diameter of the supporting part;
a truncated cone-shaped shading cylinder is arranged between the first fixed ring and the second fixed ring, and the inner wall of the shading cylinder is a specular reflection surface;
one end of the shading cylinder is matched with the outer ring of the first fixed ring and is connected with the outer ring of the first fixed ring;
the other end of the shading cylinder is matched with the inner ring of the second fixing ring and is connected with the inner ring of the second fixing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310982745.1A CN116717741B (en) | 2023-08-07 | 2023-08-07 | Multispectral light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310982745.1A CN116717741B (en) | 2023-08-07 | 2023-08-07 | Multispectral light source |
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| CN103620294A (en) * | 2011-07-19 | 2014-03-05 | 应用材料意大利有限公司 | Method and apparatus for testing photovoltaic devices |
| CN103925483A (en) * | 2013-01-11 | 2014-07-16 | 深圳市丽维科光电有限公司 | Novel LED (Light Emitting Diode) plant growth lamp |
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| US9243776B1 (en) * | 2013-08-05 | 2016-01-26 | The Boeing Company | Solar simulator and method for solar simulation |
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| CN111828851A (en) * | 2020-08-13 | 2020-10-27 | 北京泊菲莱科技有限公司 | LED integrated lamp bead capable of simulating standard light source and spectrum adjustment and adaptation method |
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| CN103620294A (en) * | 2011-07-19 | 2014-03-05 | 应用材料意大利有限公司 | Method and apparatus for testing photovoltaic devices |
| CN103925483A (en) * | 2013-01-11 | 2014-07-16 | 深圳市丽维科光电有限公司 | Novel LED (Light Emitting Diode) plant growth lamp |
| CN104049445A (en) * | 2013-03-11 | 2014-09-17 | 深圳市绎立锐光科技开发有限公司 | Light emitting device and a projection system |
| US9243776B1 (en) * | 2013-08-05 | 2016-01-26 | The Boeing Company | Solar simulator and method for solar simulation |
| CN110159973A (en) * | 2019-05-20 | 2019-08-23 | 上海权测新能源科技有限公司 | A kind of solar simulator |
| CN111828851A (en) * | 2020-08-13 | 2020-10-27 | 北京泊菲莱科技有限公司 | LED integrated lamp bead capable of simulating standard light source and spectrum adjustment and adaptation method |
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